Pipe-coupling.



PATENTED OCT. 30, 1906.

A. T. HERRICK. PIPE COUPLING.

APPLIOATION FILED SEPT. 22. 1905.

Witmco ac a 1n: nouns PETERS 60 WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

. AUSTIN T. HERRICK, BRADFORD, PENNSYLVANIA.

To all whom it may concern: I

Be it known that I, AUSTIN T. HERRIOK, a citiz'en of the United States, residing at Bradford, county sylvania, have invented certain new and use- Improvements in Pipe Couplings, of which the following is a specification. This invention relates to pipe-couplings.

In devices of this kind the desideratum is to so shape the collar and the sleeve that the packing will be forced with maximum pressure against the pipe and that during the ap plication of the pressure the packing will not be dislodged or distorted, thereby de'stro ing its eflectiveness. The coupling shou d also be simple and cheap to manufacture.

An object of the present invention is to meet the above requirements.

Other. obj ects'will be set forth'in the following description and will be more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a plan view of my invention applied. Fig; 2 is a longitudinal section of the invention applied, and Fig. 3 is a longitudinal section detached.

Referring more particularly to the drawings, 1 indicates the ends of two pipes; 2, the sleeve; 3, the collars; 4, the tie or draw rods, and 5 the elastic packing. The sleeve is formed from ordinary piping and has brazed on the inside near the center one or more segmental lugs 6. The collars are alike and are each provided with an enlarged cylindrical bore 7 at one end, the wall of which near the middle is provided with an annular channel 7. Having its largest diameter disposed toward and less than the diameter of the cylindrical bore to provide a shoulder 8 is a tapering bore 9. This bore 9 merges at its smaller end into the largest diameter of a sec ond tapering bore 10. The packing-rings 5 are formed to fit the inner walls of the collar, and for this purpose each has an enlarged cylindrical portion 11 provided with anannular projection 12. At the inner end of the cylindrical portion is formed a shoulder 13, and froin this the periphery is provided with a tapered portion 14, which merges at its smallest diameter into the largest diameter of a second tapered portion 15, the latter taper not being so great as theformer. The ring is'also provided with a bore 16 to fit a pipe and an enlarged bore 17 to receive an end of the sleeve 2 and to surround a portion Specification of Letters Patent. Application filed September 22, 1905. 7 Serial No. 279,738.

of McKean, State of Penn- PIPE-COUPLING.

Patented. 0011130, 1906.

of the same, the end of the sleeve abutting a shoulder 18, formed at the juncture of the two bores of the ring and at right angles to the bores.

The parts are assembled as shown in Fi 2. Having thus described my invention, what I claim, and desire to secure by Letters Patent, is A 1. The combination of the sleeve and the collar, one of said parts having an enlarged cylindrical bore provided with an annular groove in its wall, and a pair of tapering bores one of which has greater taper than the other, and has its largest diameter disposed toward and less than the diameter of the cylindrical bore to provide a shoulder between them and its smallest diameter merging into the largest diameter of the other tapering bore and a packing fitting these bores surrounding the other part and having a bore to fita pipe.

2. The combination of the sleeve and the collar, one of said parts having a tapering bore, and a packing-ring having a tapering portion to fit the tapering bore, and a large,

and a small bore forming a shoulder at their.

juncture at right angles thereto, the small bore being adapted to fit the pipe and the large bore receiving a portion of the other of said parts.

3. A packing-ring having an enlarged peripheral portion, a tapering peripheral portion, a shoulder at the junction of the two peripheral portions, an enlarged bore, a bore to fit a pipe, and a shoulder at the junction of the two bores.

.4. A packing-ring having a large and a small bore, a shoulder at the junction of the bores, a cylindrical peripheral portion provided with an annular projection, a tapering portionextending from the cylindrical portion, a shoulder at junction of the cylindrical portion and the tapering portion and a second tapering portion extending from the firstmentioned tapering portion and being of less taper and diameter than the latter.

5. A packing-ring having an enlarged peripheral portion, a tapering peri heral portion extending from the enlarge portion, a shoulder at the juncture of the enlarged'portion and the tapering portion, a small bore within the tapering portion, and a larger bore within the enlarged portion, said larger bore having a diameter less than the diameter of the greatest diameter of the tapering l ford, Pennsylvania, this 19th day of Sepperipheral portion, whereby a part Within ternber, 1905. the larger bore acts directly upon said taper- I ing portion and not upon the shoulder sepa- AUSTIN HERRICK' 5 rating the said tapering portion from the en- In presence oflarged peripheral portion. C. C. MELVIN, 2d,

The foregoing specification signed at Brad- W. H. FENNELL. 

